Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 3 19.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 03/21/2025   04:04:18   (  -0.02, 140.77) (  -0.20, 139.92)   97.10                80
 03/22/2025   03:48:13   (  -0.02, 140.78) (   0.80, 144.46)  419.32                80
 03/23/2025   16:09:59   (   0.02, 140.77) (   0.37, 139.19)  180.25                80
 03/24/2025   15:48:34   (   0.02, 140.77) (  -0.64, 143.73)  336.35                80
 03/26/2025   04:10:29   (  -0.03, 140.77) (  -0.56, 138.43)  267.93                80
 03/27/2025   03:54:23   (  -0.02, 140.77) (   0.46, 142.96)  249.39                80
 03/28/2025   16:16:10   (   0.03, 140.75) (   0.70, 137.69)  348.49                80
 03/29/2025   15:54:44   (   0.02, 140.74) (  -0.33, 142.22)  169.02                80
 03/31/2025   04:16:39   (  -0.02, 140.74) (  -0.90, 136.93)  434.29                80
 04/01/2025   04:00:33   (  -0.02, 140.73) (   0.14, 141.46)   83.62                80